A man ordered 4 pairs of black socks and some pairs of brown socks. The price…
2024
A man ordered 4 pairs of black socks and some pairs of brown socks. The price of a black pair is double that of a brown pair. While preparing the bill, the clerk did a mistake and interchanged the number of black and brown pairs. This increased the bill by 50 %. The ratio of the number of black and brown pairs of socks in the original order was
- A.
4 : 1
- B.
2 : 1
- C.
1 : 4
- D.
1 : 2
Attempted by 60 students.
Show answer & explanation
Correct answer: C
Explanation:
Let the number of pairs of brown socks be n.
Let the price of each pair of black socks be Rs x and that of brown socks be Rs y.
Given x = 2y. Also, 4y + nx = 1.5(4x + ny).
Putting x = 2y, we get n= 16. So the required ratio of number of black socks to the number of brown socks = 1 : 4.
Option 3.